wlan: vos_lock_init returned failure in palSpinLockAlloc.

Because of garbage value in pLock during sme_open
vos_lock_init returned failure in palSpinLockAlloc.
Fixed it by zero initialization after allocating memory for
vos_lock.

CRs-Fixed: 767727
Change-Id: I426576444f1624a6fdd5e2a5097af1194fa2fe7f
diff --git a/CORE/SYS/legacy/src/pal/src/palApiComm.c b/CORE/SYS/legacy/src/pal/src/palApiComm.c
index f6fb3a2..8b0ce71 100644
--- a/CORE/SYS/legacy/src/pal/src/palApiComm.c
+++ b/CORE/SYS/legacy/src/pal/src/palApiComm.c
@@ -204,7 +204,9 @@
       pLock = vos_mem_malloc( sizeof( vos_lock_t ) );
    
       if ( NULL == pLock ) break;
-      
+
+      vos_mem_set(pLock, sizeof( vos_lock_t ), 0);
+
       vosStatus = vos_lock_init( pLock );
       if ( !VOS_IS_STATUS_SUCCESS( vosStatus ) )
       {